“…Our results further demonstrated that the inclusion of problem solving learning in the normal classroom learning for the middle school students was considered suitable and promising. This conclusion is also supported by several previous studies that found that problems with more than one solution can help students to develop their problem solving strategies (Klegeris et al, 2016;Mann et al, 2016;Tao, 2001). Some previous studies suggested that successfully solving a problem requires certain skills and abilities, such as the ability to understand the problem, the skill to apply and synthesize prior knowledge about the problem, the ability to make decisions about how to proceed, the knowledge of how to access the measures taken in the resolution processing, and being able to analyze the results (Harskamp & Ding, 2006;Hmelo-Silver, 2007;Maloney, 1994), all of which we include in our design to scaffold students' learning.…”